Home / 13,570.91-20,326.29-10,427.78

Finding the Fourth Proportional to 13,570.91, 20,326.29 and 10,427.78

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Solution

The fourth proportional to 13,570.91, 20,326.29 and 10,427.78 is: 15,618.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.91 : 20,326.29 = 10,427.78 : x
  2. Step 2: Convert to fraction form
    13,570.91/20,326.29 = 10,427.78/x
  3. Step 3: Cross multiply
    13,570.91x = 20,326.29 × 10,427.78
  4. Step 4: Simplify right side
    13,570.91x = 211,957,977.38
  5. Step 5: Solve for x
    x = 211,957,977.38/13,570.91
  6. Step 6: Final answer
    x = 15,618.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.